An improbable eyewitness has jumped to Lindsay Lohan's defense over the alleged hit-and-run incident outside a club early Wednesday morning -- a 16-year-old girl who was moonlighting as a paparazzo.

The girl -- Sarah -- tells TMZ, she went in the alley outside the Sayers Club to speak with Lindsay, who was already sitting in her parked car with a passenger. The manager of the adjacent hookah lounge appeared on his staircase and asked Lindsay what she was doing, and she replied, "Don't worry we're leaving."

Sarah says she was trying to guide Lindsay out of the tight alleyway, which Lindsay successfully navigated and then left. Sarah says at no point did Lindsay strike a vehicle. Even more important, Sarah claims the hookah manager never left his staircase and was nowhere near Lindsay's Porsche.

Sarah explains in the video how the manager then concocted a story that he and his car were struck, promising, "[Lindsay] is definitely going to pay."